/**
* Protected method that will not generally be called directly. If you need/want
* custom HTML cleanup, this is the method you should override.
* @param {String} html The HTML to be cleaned
* @return {String} The cleaned HTML
*/

I would also like to say that this point should be completed. It seems intuitive to simply relies on the following properties of the Basicform:
- standardSubmit
- url
- method
Unfortunately, this does not work. Url and method should be specified by the submit button. As it is not very intuitive (though it is a basic feature), I think it should be fully documented.